Just about every wiring has a novel handle or number to recognize Every single addressable smoke detector and connected product promptly. six. What's a Zone in a fire alarm method? The PAD200-DUCTR is developed and designed to meet all community specifications, and also the NFPA rules about duct smoke detectors. https://www.firesense.co.uk/type/addressable-fire-system/addressable-beam-detectors/